Old Fort evacuation order expanded to include Peace River islands

The Peace River Regional District has expanded its Old Fort evacuation order to include four islands in the Peace River.

The expansion was recommended by Westrek Geotechnical Services, the regional district said in an update Thursday afternoon, Oct. 11.

article continues below

"The main slide has already impacted one of the islands and recent changes and new information regarding the west slide indicates potential for increased mobilization and depth of failure," reports Rhonda Mellafont, an engineering geologist with Westek.

"This area is considered to be at risk with respect to public safety and it is recommended that no access be allowed."

Westrek is working with provincial officials with the Ministry of Forests, Lands, and Natural Resources to analyze LiDAR survey data to understand the true size of the landslide and areas at risk. An update on that analysis will be provided as soon as possible.

Expanded Old Fort evacuation order, Oct. 11, 2018.

The landslide started Sept. 30 on a hillside above Old Fort and below a gravel quarry south of Fort St. John, pushing dirt and snapping trees down through a gully in the Peace River valley. It's destroyed a wide swath of Old Fort Road, the only road in and out of the community, and cut off utilities including power and internet.

Old Fort residents were ordered to evacuate on Oct. 7, an order that covers 54 homes and up to 200 residents. 

Mellafont has called the slide a "deep-seated failure" that is “radiating” in a number of directions and has triggered a number of "relic" slides in the area, making it difficult to predict when it will stop and where it will spread.

LiDAR surveys work by shooting laser lights into the earth that ping back to help create a map of an area. The surveys of the landslide are being cross-referenced with surveys from 2005 and 2015 to understand how the hillside above Old Fort has changed over the last 13 years.

The landslide was last estimated at six million cubic metres and growing. 

On Wednesday, it moved 20 metres in a few short hours toward and into the Peace River. It had been moving an average of just four metres per day since it be

Because of the landslide's unpredictable movement, B.C. Public Safety Minister Mike Farnworth says it has proven to be a complex and evolving situation that's challenged the response by emergency managers.

He called the landslide "unbelievable" in size and scope after he took in an aerial tour of the area on Wednesday afternoon.

"You see these trees that are bent and shattered like toothpicks, and you see these cracks on the hillside on either side of the slide, and you see how the road has buckled, it's like what you see in one of those earthquake movies," Farnworth said.

"It's a total mess. You get a real sense of the force. You see the shattered rock at the top … it's unbelievable."

Email Managing Editor Matt Preprost at editor@ahnfsj.ca.

© Copyright Alaska Highway News


NOTE: To post a comment you must have an account with at least one of the following services: Disqus, Facebook, Twitter, Google+ You may then login using your account credentials for that service. If you do not already have an account you may register a new profile with Disqus by first clicking the "Post as" button and then the link: "Don't have one? Register a new profile".

The Alaska Highway News welcomes your opinions and comments. We do not allow personal attacks, offensive language or unsubstantiated allegations. We reserve the right to edit comments for length, style, legality and taste and reproduce them in print, electronic or otherwise. For further information, please contact the editor or publisher, or see our Terms and Conditions.

comments powered by Disqus
Alaska Highway People's Choice 2020

Popular News

Lowest Gas Prices in Chetwynd, Dawson Creek, Fort Nelson, Fort St John, Tumbler Ridge
British Columbia Gas Prices provided by GasBuddy.com

Community Event Calendar

Find out what's happening in your community and submit your own local events.